Display device, lamination device, and lamination method of lamination device

Patent metadata

Field	Value
Publication number	US-11999882-B2
Application number	US-202117328318-A
Country	US
Kind code	B2
Filing date	May 24, 2021
Priority date	Aug 19, 2020
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

A display device in which a curved area having a curved shape and a straight area having a planar shape are defined includes a display panel including a first curved portion overlapping the curved area and a first straight portion overlapping the straight area, a window disposed on the display panel and including a second curved portion overlapping the curved area and a second straight portion overlapping the straight area, and an adhesive layer disposed between the display panel and the window. The adhesive layer includes a first adhesive layer disposed between the first and second straight portions and couples the first straight portion to the second straight portion, and a second adhesive layer disposed in a first space between the first curved portion and the second curved portion and a second space between the first adhesive layer and the second straight portion.

First claim

What is claimed is:

1. A display device in which a curved area having a curved shape and a straight area having a planar shape are defined, the display device comprising:
a display panel which comprises a first curved portion overlapping the curved area and a pair of first straight portions overlapping the straight area, the first curved portion is disposed between the pair of first straight portions;
a window which is disposed on the display panel and comprises a second curved portion overlapping the curved area and a pair of second straight portions overlapping the straight area, the second curved portion is disposed between the pair of second straight portions; and
an adhesive layer disposed between the display panel and the window, the adhesive layer comprising:
a first adhesive layer which is disposed between the first straight portions and the second straight portions and couples the first straight portions to the second straight portions; and
a second adhesive layer which is disposed in a first space between the first curved portion and the second curved portion and a second space between the first adhesive layer and the second straight portions,

wherein a viscosity of the adhesive layer overlapping the curved area is variable depending on the position.

2. The display device of claim 1 , wherein the first space comprises a dam formation space corresponding to an end of the first curved portion and an injection space corresponding to a region other than the dam formation space.

3. The display device of claim 2 , wherein the first space comprises a space in which the second adhesive layer and the first curved portion are in direct contact with each other.

4. The display device of claim 3 , wherein the first adhesive layer is further disposed in the dam formation space.

5. The display device of claim 4 , wherein the second adhesive layer is disposed between the second curved portion and the first adhesive layer within the dam formation space and is disposed between the second curved portion and the first curved portion within the injection space.

6. The display device of claim 3 , wherein the second adhesive layer comprises:
a high-viscosity adhesive layer disposed in the dam formation space; and
a low-viscosity adhesive layer which is disposed in the injection space and has the viscosity lower than a viscosity of the high-viscosity adhesive layer.

7. The display device of claim 2 , wherein the first adhesive layer is further disposed in the curved area.

8. The display device of claim 7 , wherein the second adhesive layer is disposed between the second curved portion and the first adhesive layer within the first space.

9. The display device of claim 8 , wherein the second adhesive layer comprises:
a high-viscosity adhesive layer disposed in the dam formation space; and
a low-viscosity adhesive layer which is disposed in the injection space and has the viscosity lower than the viscosity of the high-viscosity adhesive layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Jung Kyu-Ho
• Kim Wonjin

Classifications

• H10K71/40

  Thermal treatment, e.g. annealing in the presence of a solvent vapour · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• C09J7/243 Primary

  Ethylene or propylene polymers · CPC title

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• H10K59/00

  Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00 · CPC title